Serviceability and Prestress Loss Behavior of SCC Prestressed Concrete Girders Subjected to Increased Compressive Stresses at Release
There are limited measurements documented in the literature related to long-term prestress losses in self consolidated concrete (SCC) members. Recorded test data has shown variations in mechanical property behavior of SCC compared to conventional HSC mixtures in the 8-12 ksi range. Over the past year, precast manufacturers such as Coreslab Structures, Inc., in Marshall, MO have experienced inconsistencies in camber behavior with SCC which may be attributed to mechanical property variations, but variation in stress may also be a contributing factor. Additionally, increasing the allowable fiber stress limit is desired for full utilization of materials and members, as long as structural performance is maintained. Furthermore, accurate prediction of time-dependent prestress losses is essential for determination of the effective prestress force, which effects serviceability prediction and structural performance. Further investigation is required.
- Record URL:
Language
- English
Project
- Status: Completed
- Funding: $3873.00
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Contract Numbers:
DTRT06-G-0014
00018532
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Sponsor Organizations:
Department of Transportation
Research and Special Programs Administration
1200 New Jersey Avenue, SE
Washington, DC 20590 -
Performing Organizations:
Center for Infrastructure Engineering Studies
Missouri University of Science and Technology
Rolla, MO United States 65409 -
Principal Investigators:
Myers, John
- Start Date: 20070915
- Expected Completion Date: 0
- Actual Completion Date: 20090630
- Source Data: RiP Project 15196
Subject/Index Terms
- TRT Terms: Admixtures; Compressive strength; Curvature; Girder bridges; Prestressed concrete; Prestressed concrete bridges; Research projects; Self compacting concrete; Serviceability; Time dependence
- Subject Areas: Bridges and other structures; Design; Highways; Research; I30: Materials;
Filing Info
- Accession Number: 01462783
- Record Type: Research project
- Source Agency: Center for Infrastructure Engineering Studies
- Contract Numbers: DTRT06-G-0014, 00018532
- Files: UTC, RIP, USDOT
- Created Date: Jan 3 2013 2:10PM